import java.util.Comparator;

public class Student2 implements Comparator<Student2> {
    int age;
    public Student2(int age){
        this.age=age;
    }


    public static void main(String[] args) {
        Student2 s1=new Student2(23);
        Student2 s2=new Student2(24);
        System.out.println(compare(s1,s2));
    }

    @Override
    public int compare(Student2 o1, Student2 o2) {

        return 0;
    }
}
